For Mac OS X the FDTI device driver must be installed: USB to Serial.
After install and connecting the GBMBoost Master a new serial device is found under ”/dev/tty.*”.
If the productID is not factory standard follow this setup: OpenDCC USB Setup

The reported Location ID must mach with a Sensor-ID in Rocrail.
This sensor should have its address set to zero.
The reporting address is used for the sensor Code.
IRM only reports arrival and not depart, so for automatically reset use the Sensor Timer.

It is recommended not to add or remove BiDiB modules to/from the bus in automatic mode because this will cause a lot of communication traffic and leads to strong delayed events.
The track power will be shut off in case a module is reported as 'lost'.